Color: Black-Grey. Suitable for all standard dartboards that meet WDF dimensions. The dart surround simply slips over the board and protects the wall or wallpaper from missed throws. It reduces the number of damaged darts. The PU material is durable, and the missed throw holes are less visible compared to other surrounds. Outer diameter: 57 cm, ring thickness: approximately 11.7 cm, material thickness: 3.5 cm. The dartboard is not included. The Kings Dart Dart Surround is compatible with dartboards that conform to the WDF (World Darts Federation) standard, with a diameter of 17.75 inches (45.085 cm). Examples include: Kings Dart Sisal Dartboard Professional, Kings Dart Sisal Dartboard Professional HD, Winmau Dartboard Blade 6 Dual Core, Winmau Dartboard Blade 6.